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Washer fluid being poured into a car windshield washer reservoir
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Qwix Mix

How Qwix Mix grew total sales inside a TACoS guardrail by moving key SKUs to FBA and defending its listing

+38.6%
Total sales
31.7%
TACoS (guardrail ≤40%)
98%
Buy Box share, top ASIN
Hired for
  • PPC Management
  • Account Management
  • Brand Protection
  • Weekly Reporting
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Qwix Mix makes a biodegradable, Made in USA windshield washer fluid concentrate, a high-margin product that has to convince shoppers to skip the cheap jug at the gas station.

The challenge

Previous agencies set campaigns up and disappeared. An unauthorized seller on the top ASIN was taking Buy Box share, and merchant-fulfilled SKUs lost the Prime badge to competitors. Demand also swings with winter and bug season, so a flat budget overspent in quiet months and ran short in busy ones.

Structure → Demand → Defense → Scale

Our approach

  1. 1
    Structure

    Waste out, clear roles

    Negatives were added and search terms cleaned, and every campaign was given one clear job against an agreed TACoS ceiling of 40%.

  2. 2
    Demand

    FBA and concentrate intent

    Key SKUs moved to FBA to win Prime eligibility. Bids shifted toward terms like “washer fluid concentrate” and “biodegradable washer fluid”, paced to winter and summer bug season.

  3. 3
    Defense

    Listing protected

    We flagged the unauthorized seller on the top ASIN and protected the brand’s Buy Box, then defended branded search with Sponsored Products.

  4. 4
    Scale

    A weekly rhythm

    A report lands every Monday with what changed and why, alongside practical FBA and fulfilment advice.

Qwix Mix 8 oz biodegradable windshield washer fluid concentrate
  • Negatives added
  • Unauthorised seller flagged
  • Monday reports

Insights that drove decisions

  • 6.2% vs 11.8% conversion after FBA

    Merchant-fulfilled SKUs converted at roughly half the rate of Prime listings.

    We moved the key SKUs to FBA.

  • Buy Box share 71% → 98%

    An unauthorized seller was holding the Buy Box on the top ASIN.

    We flagged the seller and tracked Buy Box daily until it was resolved.

  • 3.4× ROAS vs generic terms

    Concentrate and eco terms returned far more than generic washer-fluid searches.

    We shifted budget to concentrate and biodegradable keywords.

Results

  • Total sales up 38.6%
  • TACoS held at 31.7%, inside the 40% guardrail
  • Wasted spend down 27.4%
  • Buy Box share on the top ASIN up from 71% to 98%
  • Conversion on key SKUs up from 6.2% to 11.8% after the FBA move
Total sales
+38.6%
TACoS (guardrail ≤40%)
31.7%
Buy Box share, top ASIN
98%
For automotive brands

The blueprint

For high-margin automotive consumables, the goal is total sales inside a TACoS ceiling, not the lowest ACoS. Get key SKUs Prime-eligible, remove unauthorized sellers before scaling, and pace spend to the seasons that drive demand.

Thank you to the Qwix Mix team for trusting us with the account.

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Inside the plan

  • Profit snapshot: TACoS, break-even ROAS and contribution margin by ASIN
  • PPC teardown: structure, wasted search terms, bids and placements
  • Listings & SEO: titles, bullets, backend keywords and rank gaps
  • Creative review: main image, A+ content, video and storefront
  • Competitive position: who’s taking your share and how
  • 90-day full-service growth plan with targets
  • 3-month first term, then month-to-month
  • 30 days’ notice
  • Weekly reporting
  • Dedicated strategist
  • Slack access